CN201584683U

CN201584683U - Double-bus arrangement linking structure of gas-insulated metal closed switch device

Info

Publication number: CN201584683U
Application number: CN2009202455326U
Authority: CN
Inventors: 徐晟�; 贺小瑞; 吕黎; 刘伟
Original assignee: China XD Electric Co Ltd
Current assignee: China XD Electric Co Ltd
Priority date: 2009-12-01
Filing date: 2009-12-01
Publication date: 2010-09-15
Anticipated expiration: 2019-12-01

Abstract

The utility model discloses a double-bus arrangement linking structure of a gas-insulated metal closed switch device, which comprises a current transformer, a phase-changing module, a main bus and a three-position isolated grounding switch composite module. The current transformer phase-changing module 15 realizes sliding electrical connection between a three-phase conductor 13 with a current transformer coil 3 and a three-phase conductor 16 through a spring contact 14; the current transformer phase-changing module 15 divides a single conducting loop led out from the moving side of a breaker through three-phase conductors 16, 17 and 18 into double conducting loops to be respectively connected with the main bus, the three-position isolated grounding switch composite modules 11 and 12. The double-bus arrangement linking structure is directly connected with the main bus and the three-position isolated grounding switch composite modules through changing locations where the bus is led out for the three-phase conductor, reduces the occupied space for the connecting structure, saves a three-way shell and a basin-shaped insulator, greatly reduces cost and connecting sealing links, and increases reliability of sealing.

Description

Double-bus arrangement connecting structure in the Cubicle Gas-Insulated Switchgear

Technical field:

The utility model relates to the high voltage switchgear field, the syndeton that particularly a kind of double-bus that is used for Cubicle Gas-Insulated Switchgear (GIS) is arranged.

Background technology:

Original GIS is with in the double-bus arrangement connecting structure, and current transformer and commutation module are separated by disc insulator, become two separate unit.Current transformer is finished and being connected of main bus bar and three station isolation earthing switch composite module parallel waies by the commutation module.As shown in Figure 1, current transformer (CT) is separated by disc insulator 5 with commutation module 6, be with current mutual inductor coil 3 on the three-phase conductor 4 respectively, be connected to the moving side of circuit breaker (CB) by contact 2 and conductor 1, the other end of three-phase conductor 4 is connected with commutation module 6 by the center conductor of bolt and disc insulator 5.Commutation module 6 is made up of three-

phase conductor

7,9,10, contact 8 and shell (two threeway tank bodies outside 7,9,10), and three-phase conductor 7 is divided into two-way by three-

phase conductor

9,10 and contact 8 and is connected with three station isolation earthing switch composite modules 11,12 with two main bus bars respectively.The existing problem of this syndeton is: amount of parts is many, and sealing part is many, the manufacturing cost height.

Summary of the invention:

The utility model with the existing shortcoming of double-bus arrangement connecting structure, provides a kind of simple in structure, economy double-bus arrangement connecting structure easily at existing GIS.By the commutation module being compound to current transformer (CT) inside, cancel the disc insulator that connects usefulness between original current transformer and the commutation module, reduced by two sealing surfaces, thereby realized that current transformer (CT) and main bus bar and three station isolation earthing switch composite modules are direct-connected.

For achieving the above object, the utility model takes following technical scheme to be achieved:

Double-bus arrangement connecting structure in a kind of Cubicle Gas-Insulated Switchgear, comprise current transformer, commutation module 15 and main bus bar and three station isolation earthing switch composite modules 11,12, it is characterized in that described commutation module 15 is compounded in the inside of current transformer, described commutation module 15 is directly connected to main bus bar and three station isolation earthing switch composite modules 11,12 by conductor.

The further technical scheme of the utility model is that described current transformer commutation module 15 is electrically connected by spring contact 14 and three-phase conductor 16 slidingtypes by the three-phase conductor 13 that current mutual inductor coil 3 is housed, and is compound to the inside of current transformer.

The utility model further technical scheme is that single galvanic circle that described current transformer commutation module 15 is drawn the moving side of circuit breaker by three-

phase conductor

16,17,18 is divided into two galvanic circles and is connected with three station isolation earthing switch composite modules 11,12 with main bus bar respectively.

The utility model compared with prior art, its beneficial effect that has is, by draw the position of bus at current transformer inner transformation three-phase conductor, directly be connected with three station isolation earthing switch composite modules with main bus bar, syndeton is taken up room reduce relatively, a threeway shell and a disc insulator have been saved, cost reduces significantly, and assembly work is simple, and it is few to connect sealing part, improved the reliability of sealing, terminal with compact integral structure is lucid and lively.

Description of drawings:

Fig. 1 is that schematic diagram is arranged at the interval of existing a kind of double-bus syndeton;

Fig. 2 is that schematic diagram is arranged at the interval of the utility model double-bus syndeton.

Among the figure: 1, conductor; 2, contact; 3, current mutual inductor coil; 4, conductor; 5, disc insulator; 6, commutation module; 7, three-phase conductor; 8, contact; 9, three-phase conductor; 10, three-phase conductor; 11,12, main bus bar and three station isolation earthing switch composite modules; 13, three-phase conductor; 14, spring contact; 15, current transformer commutation module; 16,17,18, three-phase conductor; 19, current transformer casing; 20, perpendicular type housing;

Embodiment:

Below in conjunction with drawings and Examples the utility model is described further.

As shown in Figure 2, the moving side conductor 1 of circuit breaker (CB) is connected with current transformer commutation module 15 by contact 2, is finished and being connected of main bus bar and three station isolation earthing switch composite modules 11,12 by current transformer commutation module 15.Current transformer commutation module 15 is made up of current mutual inductor coil 3, three-

phase conductor

13,16,17,18, spring contact 14, current transformer casing 19 and perpendicular type housing 20.Current transformer commutation module 15 realizes that by spring contact 14 and three-phase conductor 16 slidingtype is electrically connected by the three-phase conductor 13 that current mutual inductor coil 3 is housed.Being divided into two-way by three-

phase conductor

16,17,18 again is connected with three station isolation earthing switch composite modules 11,12 with main bus bar respectively.Promptly utilize current transformer commutation module 15 that single galvanic circle of drawing from the moving side of circuit breaker is divided into two galvanic circles and be connected to main bus bar and three station isolation earthing switch composite modules.Because contact 2 differs 90 degree with the center conductor position of the insulator that main bus bar links to each other with three station isolation earthing switch composite modules 11,12, realizes commutation thereby three-

phase conductor

16,17 is designed to bending.

The foregoing description only is a better embodiment of the present utility model; describe technical conceive of the present utility model and essential implementation in detail; be not to be that protection range of the present utility model is limited; all any simple modification and equivalent structure transformation or modifications of being done according to the utility model spirit all should be encompassed within the protection range of the present utility model.

Claims

1. double-bus arrangement connecting structure in the Cubicle Gas-Insulated Switchgear, comprise current transformer, commutation module (15) and main bus bar and three station isolation earthing switch composite modules (11), (12), it is characterized in that: described commutation module (15) is compounded in the inside of current transformer, and described commutation module (15) is directly connected to main bus bar and three station isolation earthing switch composite modules (11), (12) by conductor.

2. double-bus arrangement connecting structure in the Cubicle Gas-Insulated Switchgear according to claim 1, it is characterized in that: described current transformer commutation module (15) is to be electrically connected by spring contact (14) and three-phase conductor (16) slidingtype by the three-phase conductor that current mutual inductor coil (3) are housed (13), is compound to the inside of current transformer.

3. double-bus arrangement connecting structure in the Cubicle Gas-Insulated Switchgear according to claim 1 is characterized in that: single galvanic circle that described current transformer device commutation module (15) is drawn the moving side of circuit breaker by three-phase conductor (16), (17), (18) is divided into two galvanic circles and is connected with three station isolation earthing switch composite modules (11), (12) with main bus bar respectively.